Comparison of air pollution in Shanghai and Lanzhou based on wavelet transform

doi:10.1007/s11356-017-8959-8

CORC > 兰州理工大学 > 兰州理工大学 > 经济管理学院

	Comparison of air pollution in Shanghai and Lanzhou based on wavelet transform
	Su, Yana 2,3; Sha, Yongzhong 2; Zhai, Guangyu 1,2; Zong, Shengliang 2; Jia, Jiehua 3
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2019-06-01
卷号	26 期号:17 页码:16825-16834
关键词	Air pollution index Wavelet transform Time series Change period Timescale Shanghai Lanzhou
ISSN号	0944-1344
DOI	10.1007/s11356-017-8959-8
英文摘要	For a long-period comparative analysis of air pollution in coastal and inland cities, we analyzed the continuous Morlet wavelet transform on the time series of a 5274-day air pollution index in Shanghai and Lanzhou during 15years and studied the multi-scale variation characteristic, main cycle, and impact factor of the air pollution time series. The analysis showed that (1) air pollution in the two cities was non-stationary and nonlinear, had multiple timescales, and exhibited the characteristics of high in winter and spring and low in summer and autumn. (2) The monthly variation in air pollution in Shanghai was not significant, whereas the seasonal variation of air pollution in Lanzhou was obvious. (3) Air pollution in Shanghai showed an ascending tendency, whereas that in Lanzhou presented a descending tendency. Overall, air pollution in Lanzhou was higher than that in Shanghai, but the situation has reversed since 2015. (4) The primary cycles of air pollution in these two cities were close, but the secondary cycles were significantly different. The aforementioned differences were mainly due to the impact of topographical and meteorological factors in Lanzhou, the weather process and the surrounding environment in Shanghai. These conclusions have reference significance for Shanghai and Lanzhou to control air pollution. The multi-timescale variation and local features of the wavelet analysis method used in this study can be applied to varied aspects of air pollution analysis. The identification of cycle characteristics and the monitoring, forecasting, and controlling of air pollution can yield valuable reference.
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000470140500002
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/155343]
专题	经济管理学院
作者单位	1.Lanzhou Univ Technol, Sch Econ & Management, Lanzhou 730050, Gansu, Peoples R China 2.Lanzhou Univ, Sch Management, Lanzhou 730000, Gansu, Peoples R China; 3.Lanzhou Inst Technol, Coll Econ & Management, Lanzhou 730050, Gansu, Peoples R China;
推荐引用方式 GB/T 7714	Su, Yana,Sha, Yongzhong,Zhai, Guangyu,et al. Comparison of air pollution in Shanghai and Lanzhou based on wavelet transform[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2019,26(17):16825-16834.
APA	Su, Yana,Sha, Yongzhong,Zhai, Guangyu,Zong, Shengliang,&Jia, Jiehua.(2019).Comparison of air pollution in Shanghai and Lanzhou based on wavelet transform.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,26(17),16825-16834.
MLA	Su, Yana,et al."Comparison of air pollution in Shanghai and Lanzhou based on wavelet transform".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 26.17(2019):16825-16834.